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//IIC Start
void I2cStart()
{
	HT16K33_SDA_H;
	HT16K33_SCL_H;
	HT16K33_SDA_L;
	HT16K33_SCL_L;			
	
}

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void I2cStop()
{
	HT16K33_SCL_H;
	HT16K33_SDA_L;
	HT16K33_SDA_H;
	
}

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unsigned char I2cSendByte(unsigned char dat)
{
    unsigned char a=0,b=0;//
    for(a=0;a<8;a++)//要发送8位，从最高位开始
    {
        if(dat>>7)
        {
            HT16K33_SDA_H;
        }
        else
        {
            HT16K33_SDA_L;
        }

        dat=dat<<1;
        HT16K33_SCL_H;

        HT16K33_SCL_L;
    }
    HT16K33_SDA_H;
    HT16K33_SCL_H;
    while(HT16K33_SDA)//等待应答，也就是等待从设备把SDA拉低
    {
        b++;
        if(b>200)  //如果超过没有应答发送失败
        {
            //HT16K33_SCL_L;
        return 0;
        }

    }
    HT16K33_SCL_L;
    return 1;

}

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sbit HT16K33_SCL=P1^0;
sbit HT16K33_SDA=P1^1;

#define HT16K33_SCL_L      HT16K33_SCL=0
#define HT16K33_SCL_H      HT16K33_SCL=1

#define HT16K33_SDA_L      HT16K33_SDA=0
#define HT16K33_SDA_H      HT16K33_SDA=1

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#define SCL_GPIO_PORT    	GPIOA		              /* GPIO端口 */
#define SCL_GPIO_CLK 	    RCC_APB2Periph_GPIOA		/* GPIO端口时钟 */
#define SCL_GPIO_PIN		GPIO_Pin_0			        

#define SDA_GPIO_PORT    	GPIOA			              /* GPIO端口 */
#define SDA_GPIO_CLK 	    RCC_APB2Periph_GPIOA		/* GPIO端口时钟 */
#define SDA_GPIO_PIN		GPIO_Pin_1			        
		 


#define HT16K33_SCL_L 		 GPIO_ResetBits(SCL_GPIO_PORT,SCL_GPIO_PIN)
#define HT16K33_SCL_H 		 GPIO_SetBits(SCL_GPIO_PORT,SCL_GPIO_PIN)//SCL

#define HT16K33_SDA_L 		 GPIO_ResetBits(SDA_GPIO_PORT,SDA_GPIO_PIN)//SDA
#define HT16K33_SDA_H 		 GPIO_SetBits(SDA_GPIO_PORT,SDA_GPIO_PIN)

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//亮度调节宏定义，范围0-15

#define  Brilliance  8